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- W4313559910 abstract "Exosomes offer ideal biomarkers for liquid biopsies. However, high-efficient capture of exosomes has been proven to be extreme challenging. Here, we report a soluble pH-responsive host-guest-based nanosystem (pH-HGN) for homogeneous isolation of exosomes around physiological pH. The pH-HGN consists of two specifically functionalized modules. First, a pH-responsive module, poly-dimethylaminoethyl methacrylate, provides homogeneous capture circumstances and sharp pH-triggered self-assembly separation in aqueous solution to improve capture efficiency and reduce nonspecific adsorption. Second, a host-guest module, poly-acrylamide azobenzene and β-cyclodextrin linked with exosomes-specific antibody, could act as the cleavable bridge to specific capture and subsequent rapid release of captured exosomes through host-guest interaction between β-cyclodextrin and AAAB moieties. The pH-HGN offered high capture efficiencies for exosomes from two different cell lines, which were 90.2% ± 0.28% and 87.0% ± 4.6% for H1299 and MCF-7 cell-derived exosomes, respectively. The purity of isolated exosomes was (1.49 ± 0.71) × 1011 particles/µg, which was 4.1 times higher compared with the gold standard ultracentrifugation (UC) method. Furthermore, the isolated exosomes via the pH-HGN can preserve well integrity and biological activity. The developed pH-HGN was further successfully applied to differentiate lung cancer patients from healthy persons. These findings indicated that pH-HGN is a promising strategy in exosomes-based research and downstream applications." @default.
- W4313559910 created "2023-01-06" @default.
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- W4313559910 date "2023-08-01" @default.
- W4313559910 modified "2023-09-25" @default.
- W4313559910 title "A soluble pH-responsive host-guest-based nanosystem for homogeneous exosomes capture with high-efficiency" @default.
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- W4313559910 doi "https://doi.org/10.1016/j.cclet.2023.108129" @default.
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